Photoinduced Fragmentation Borylation of Cyclic Alcohols and Hemiacetals
作者:Chao Shu、Rudrakshula Madhavachary、Adam Noble、Varinder K. Aggarwal
DOI:10.1021/acs.orglett.0c02513
日期:2020.9.18
conveniently prepared by radical-mediated ring opening of cyclic alcohols and hemiacetals, respectively. The reactions proceed under mild conditions in the absence of additives or photocatalysts, display excellent functional group tolerance, and are shown to allow cleavage of 4-, 5-, 6-, and 7-membered ring substrates. The mechanism proceeds via sequential homolytic N–O and C–C bond cleavages, the latter
The reaction of diethylaminosulfur trifluoride with a tertiary cyclobutanol afforded a fluorocyclobutane, a (fluoromethyl)cyclopropane or a homoallylic fluoride.